INQUIRY PHYSICS TEST REVIEW
Units 1-4: One and Two-dimensional Motion
Name
M ultiple Choice
Covers all topics: 1-d m otion, vectors, falling bodies, projectiles.
Be prepared to m ake or interpret distance or speed graphs of objects for ANY of the m otions we have studied,
including falling objects and projectiles.
Know your rules of vector addition.
TO PREPARE:
Carefully review all of your notes and review the readings on projectiles.
Study the m ultiple choice questions on the m easurem ent and m otion and vectors quizzes, the projectiles
reading worksheet, and do the accom panying review concept questions.
Problems
Be prepared for a projectile problem , a falling body problem , a vector problem , and two 1-d problem s with one
having m ultiple steps (where you cannot solve for the answer directly, but m ust first find another given).
TO PREPARE:
Do the accom panying review problem s.
Inquiry Investigations 1-4 Test Review Assignment
Show your w ork on all problems, including givens, equations, and all appropriate units. Answ ers
should be expressed w ith the proper number of significant figures. Assume g = - 9.80 m/s 2 and that
air resistance is negligible.
1.
A stone is thrown straight downward with an initial speed of 8.00 m/s from a height of 25.0 meters.
a) Find the time it takes to reach the ground.
b)
2.
Find its impact velocity.
A supersonic airplane was flying horizontally with a speed of 620 m/s when a radar pod fell off. If the pod
travelled a horizontal distance of 40,300 m before it struck the ground, what was the altitude of the airplane?
20,700 m
Unit 1-4: One and Two-Dimensional Motion, Review I
©2008 by G. Meador – www.inquiryphysics.org
Inquiry Physics Unit 1-4 Test Review
Page 2
3.
How long does it take a car to travel 50.0 m while slowing from 20.0 m/s to a stop?
4.
A stone is shot upward with a speed of 20.0 m/s from a tower that is 45.0 m high, and strikes the ground at the
tower’s base. Find the impact speed of the stone.
5.
One summer Mr. M was at the Denver Casa Bonita watching the cliff divers. He saw a diver launch
horizontally from the 9.00 m tall cliff at approximately 1.20 m/s. How far away from the base of the cliff was
the diver when she hit the water?
6.
Fluffy the cat decides to swim across the Caney River. The cat paddles due east at 5.0 m/s, and the river has
a current of 2.0 m/s due south. Find the magnitude and direction of Fluffy's resultant velocity (in m/s) by
drawing a scale diagram.
5.4 m/s at 22E S of E
Scale:
1 cm =
m/s
Resultant magnitude:
(in m/s)
Resultant direction:
(specify degrees and compass
headings)
Unit 1-4: One and Two-Dimensional Motion, Review I
©2008 by G. Meador – www.inquiryphysics.org
Inquiry Physics Unit 1-4 Test Review
Page 3
W rite the letter corresponding to the best answ er in the blank at the left of each question.
Assume air resistance is negligible.
7.
W hich of the following quantities is a vector which changes signs (directions) when an object that was
thrown upward stops rising and begins to fall?
A. velocity
B. speed
C. acceleration
D. time
8.
A ton of feathers and a ton of bricks are dropped from the same height on the moon. W hat happens?
A. The feathers strike the ground first.
B. The bricks strike the ground first.
C. The feathers and bricks strike the ground simultaneously.
D. Nothing hits the ground, because there is no gravity on the moon.
9.
W hen an object that was thrown upward reaches its highest point, which statement is true?
A. The acceleration switches from positive to negative.
B. The acceleration is zero.
C. The total displacement is zero.
D. The velocity is zero.
10.
A stone is thrown upward from atop a cliff and then lands at the base of the cliff. W hich statement
is true if the upward direction is considered "positive"?
A. The initial velocity of the stone is negative.
B. The acceleration of the stone is positive.
C. The final velocity of the stone is positive.
D. The final displacement of the stone is negative.
11.
Victor Velocity is standing on top of the roof of his house,
firing stones with his slingshot over a level field. He is
aiming straight outward, horizontally. If Victor pulls back
harder on the sling to shoot a stone, which of the following
quantities will be changed?
A. The vertical displacement of the stone.
B. The distance the stone travels.
C. The time it takes the stone to strike the ground.
D. The stone's initial vertical velocity.
12.
W hile riding at a constant speed on the train at the Kiddie Park,
Mr. M playfully tossed Fluffy straight upward. During the time
Fluffy was in the air, the train moved forward one meter. Fluffy
landed...
A. in Mr. M's loving arms.
B. one meter in front of Mr. M.
C. one meter behind Mr. M.
D. several meters behind Mr. M.
13.
An object is observed and a graph of its distance versus time is constructed. The graph has a slope
of +5.00 when the distance is measured in meters and the time is measured in seconds. The object
was...
A. moving at a constant speed of 5.00 m/s.
B. motionless.
C. decelerating.
D. accelerating at 5.00 m/s 2.
14.
Neglecting air resistance, when an object is thrown straight up, which of the following quantities is
NOT the same on the way down as on the way up?
A. acceleration
B. average speed
C. velocity
D. time of travel
Unit 1-4: One and Two-Dimensional Motion, Review I
©2008 by G. Meador – www.inquiryphysics.org
Inquiry Physics Unit 1-4 Test Review
15.
Page 4
Three forces simultaneously act on an object. The first is a 5 Newton force acting due east, the
second is a 3 Newton force acting due west, and the third is a 4 Newton force acting due east. W hat
is the resultant force?
A. 12 Newtons east
B. 6 Newtons east
C. 4 Newtons east
D. 2 Newtons west
A stone is tossed straight upward at +9.80 m/s.
16.
17.
18.
W hat is its velocity after 1.00 s?
A. +4.90 m/s
B. 0 m/s
C. -4.9 m/s
D. -9.80 m/s
W hat is its displacement after 1.00 s?
A. +4.90 m
B. 0 m
C. -4.90 m
D. -9.80 m
W hat is its acceleration at the top of its rise?
A. +4.90 m/s 2
B. 0 m/s 2
C. -4.90 m/s 2
D. -9.80 m/s 2
Questions 19 - 22 refer to the following situation:
A girl stood at first base on a level playing field and tossed a softball at an angle
of 35E above the horizontal. It was caught by another player over home base at
the same height above the ground as it was originally thrown.
19.
At which point along its trajectory was the softball travelling
the fastest?
A. Just after it was released.
B. W hen it reached its maximum height.
C. Just before it was caught.
D. Both A and C are correct if there is no air resistance.
20.
If the girl threw another softball with the same initial speed, but at 40E above the horizontal, . . .
A. it would have travelled a smaller horizontal distance.
B. it would have travelled a larger horizontal distance.
C. it would have travelled the same horizontal distance.
21.
W hat angle of release would make the softball travel as far as possible?
A. 15E
B. 30E
C. 45E
D.
65E
W hat was the softball's horizontal acceleration during its flight?
A. 0 m/s2
B. 2.45 m/s2
C. 4.90 m/s 2
D.
9.80 m/s 2
22.
23.
Draw the graphs for the free-fall motion of the projectile shown at right.
Unit 1-4: One and Two-Dimensional Motion, Review I
©2008 by G. Meador – www.inquiryphysics.org